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Joe Barcus
Joe Barcus, Auto Mechanic
Category: Car
Satisfied Customers: 38
Experience:  50 yrs old lol
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1993 F-250: 40d tranmission has 150..haul..fifth wheel..wheel trailer

Customer Question

My 1993 F-250's E-40D tranmission has 150,000 miles on it. I service it every 16,000-20,000 miles religously. It has been used mostly to haul a 12,000 lb fifth wheel trailer. I have 4.56:1 rear end gears and do not tow in overdrive. I recently made several long climbs north out of Yakima on about 5% grades and after that the transmission started slamming into gear.It was cool out and no overheating occured. I stopped and checked the fluid level which was okay and continued on. I also disconnected the battery to reset the computer. The next day it still shifted hard but not as bad. Now, while solo driving it only shifts slightly hard from low to second but from second to high it is smooth? Is this repairable, or am I looking at an overhaul?
Submitted: 11 years ago.
Category: Car
Expert:  Joe Barcus replied 11 years ago.
look behind the modulator valve, I have had in my experenice a few times that shaft get burrs, or just wear a little on it. first time this ever happen was on a 71 olds cost me a good penny just to find out that rod needed cleaning. now im not saying thats whats going on with yours. but surely worth a look. just pull your modulator pull that valve out clean it up stick it back in, now if you see trans fluid run out of the vac line than you will know you have a bad modulator valve as well.
Customer: replied 11 years ago.
Reply to Joe Barcus's Post: I'm talking apples and you are talking oranges. An old Oldsmobile transmission is a whole differeent ballgame than an E-40D Your wag reply is neither required nor desired.
Expert:  Joe Barcus replied 11 years ago.
LET ME TELL YOU A TRANSMISSION IS A TRANSMISSION IF ITS A OLDS JUNK FORD OR VW. I WAS JUST SHARING MY THOUGHTS IS ALL. AND YOU COME BACK AT ME WITH THIS CRAP. I REALLY DONT CARE WHAT YOU DO WITH YOUR FORD, MY TRANSMISSION WORKS GREAT. GOOD DAY

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